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Cheaper solutions for Aero V6 brake vacuum pump Posted by magalar [Email]  (#1325)  [Profile/Gallery]
(more from magalar) on Thu, 18 Sep 2014 09:55:20
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Hi everyone,
My 08 Aero had a dead electric supplemental vacuum pump since I got her in 02/2013. Never heard the pump running. And never noticed I needed it even while doing some hot laps on an ice racetrack...
Anyway, car was designed that way, so a replacement pump was needed. But at 466$ (new, eEuroparts, 93191598), time to find a cheaper solution.
For around 280$, one can buy the same looking pump/relay assembly from these guys : http://www.ecstuning.com/Search/ES481840/ES2211053/
Same UP28 Hella pump, same Hella 3-pin relay, same connector, it looks identical. The Hella part number on the relay is 5FD 008 572-01 on the Saab relay, and 5FD 008 572-00 on the VW relay. However, the VW pump comes without the steel bracket... Big deal, reuse the old one.
Then, for around 120$, one can buy a new generic Hella UP28 pump, without the relay. You'll have to be creative with the mounting, built a short harness to reuse the old Saab relay, but that's it. For a 75% discount, that's not bad.
And then, there is the used part solution. Since that UP28 pump is used on many cars, it's easy to find. RDX, Wrangler, Cruze, Sonic, and many more have one under their fancy hood.
My solution ? I bought on eBay a 2012 Chevy Sonic pump from a totaled car (3000 miles...) for 60$. 96597326, complete with the relay, the plug, and all the hoses and connectors and pressure switch. Not bad indeed.
I then spent an hour trying to install it in the car with the Chevy brackets. No easy way found... And then, lightning struck ! I just attached (with 4 good quality zippy-ties) the pump to the small Saab bracket removed from the old pump. When the pump+bracket is reattached via rubber mounts to the bigger bracket, it is indeed sandwiched and can't fall off even if all the zippy ties break. It even looks completely OEM to an untrained eye. This solution would work with any generic UP28 pump, being it Hella or GM or Chrysler or Acura or Volvo.
Then, use a short (2 in) rubber hose to connect the Saab OEM pipe to the pump inlet. Since they are of different diameter, I sawed off the bigger part of the OEM aluminum nipple to have a tight fit. Add 2 small collars, plug the Sonic relay between the Saab harness and the pump, attach it with some more zippy-ties, and there you go.
Upon testing, pump works quickly, makes no strange noise, doesn't rub on any metal part, and stops when vacuum is attained in the brake booster.
Overall, I'm at less than 100$ with an hour of (real) work. And I can recoup a few bucks by selling the electrical cut-off switch, the vacuum check-valve or the bracket... Not that I'll do it...
, Thu, 18 Sep 2014 09:55:20 <-- Viewing This Message
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